Patents by Inventor Hirobumi Haga

Hirobumi Haga has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Erasing method
    Patent number: 6296713
    Abstract: According to a first aspect of this invention, it is assumed that the recording is carried out on the recording medium by a non-catalyst-containing recording agent and a liquid-state catalyst is coated on the recording medium at the time of erasing processing and subsequently the heating and irradiation of near infrared rays are carried out as the erasing processing. Also, according to a second aspect of this invention, it is assumed that the recording is carried out on the recording medium by a catalyst-containing recording agent and, at the erasing processing time, the heating and irradiation of the recording agent are simultaneously carried out using a thermal emission and near IR irradiation source such as a halogen lamp.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: October 2, 2001
    Assignee: Fujitsu Limited
    Inventors: Masaru Sugie, Chiaki Sekioka, Yoshiaki Yanagida, Hisashi Uemura, Masayuki Kubota, Hirobumi Haga
  • Erasing method and erasing apparatus for performing that erasing method
    Patent number: 6071352
    Abstract: According to a first aspect of this invention, it is assumed that the recording is carried out on the recording medium by a non-catalyst-containing recording agent and a liquid-state catalyst is coated on the recording medium at the time of erasing processing and subsequently the heating and irradiation of near infrared rays are carried out as the erasing processing. Also, according to a second aspect of this invention, it is assumed that the recording is carried out on the recording medium by a catalyst-containing recording agent and, at the erasing processing time, the heating and irradiation of the recording agent are simultaneously carried out using a thermal emission and near IR irradiation source such as a halogen lamp.
    Type: Grant
    Filed: April 15, 1994
    Date of Patent: June 6, 2000
    Assignee: Fujitsu Isotec Limited
    Inventors: Masaru Sugie, Chiaki Sekioka, Yoshiaki Yanagida, Hisashi Uemura, Masayuki Kubota, Hirobumi Haga